Does the distance from the nozzles entry into the air stream to the MAF, have a direct affect on your A/F ratio while spraying?
I've heard that the closer the nozzle, the richer the air mixture will turn out.
Is this true?

I have a 7'' distance on a .44jet dry shot. I'm going to be logging tomorrow morning.

 

The closer the colder the maf willbecome,, Now not sure but maf can only do so much, and I know you donot want the nitrous plume aim directly at the maf.. 7" is plenty far away..
who's dry nozzle do you have.
Ricky

 

I'm using a cold fusion kit.

Thanks.

 

Not only is there so much a maf can do but u also have to becareful not to freeze your maf

 

Maybe I'm missing something here but....If
1. You spray after the MAF
2. And are at WOT which you most likely will be
Wouldn't there be so much of a vacuum that the N2O wouldn't get anywhere near the MAF for it to read anything and should not affect the temp of the MAF.
So how could it adjust for the N2O or freeze the MAF?

 

On a dry you spray before the maf. The maf reads temp/density and if the nozzle is to close and spraying directly on the wire you will get a reading that really isn't correct. This is why I like the dual nozzle pointed away from maf, then it can mix with incoming air and you'll get a true temp/density reading. On my set-up I have my dual nozzles about three inches away from maf but thet are pointed at approx 22* away from maf and meet in the center (apex) of the air box creating a sort of null area. This allows a great mix with in coming air and maf reads great. Why some read it rich when real close and direct hitting, I am not sure, cause tuning programs indicate it shouldn't, but often does. here's a pic, check where the two streams of nitrous meet (apex).

Robert

 

I see. I didn't realize on a dry shot it was before the MAF. My MAF is about 3" from the filter. I'd almost have to spray the N2O towards the cone filter and let it get sucked back in. Thanks, now I get it.

 

with a little treaking of th PCM the MAF can easily and accurately read enough flow to deliver 700 rwhp total via dry nitrous (motor hp + dry nitrous hp).

And like Robert said...its best to have a thorough mix in the airbox before it goes across the MAF. Some have aimed directly at the MAF for various reason...but if you get too close and the spray pattern is tight...you may actually spray right through the MAF and not have the majority of it picked up. Causing a lean condition.

 

I have a wet kit to install so I guess I wouldn't have to worry about the MAF If I was doing a dry shot I think I would move the MAF closer to the TB by modding the intake tube somehow.

 

Some do this for certain.
Robert